diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4251584..a2589c9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -493,5 +493,28 @@ jobs:
 
           exit "${status}"
 
+      # The release builds a checksum manifest and verifies it from inside dist/. A path-prefix mistake
+      # there is invisible until a tag is already cut and immutable, so the round trip is exercised
+      # here instead of being discovered during a release.
+      - name: Checksum manifest round-trips the way the release verifies it
+        run: |
+          work="$(mktemp -d)"
+          cp -r pyproject.toml src README.md LICENSE "${work}/"
+          cd "${work}"
+
+          uv build --out-dir dist
+          ( cd dist && sha256sum -- *.whl *.tar.gz > SHA256SUMS )
+          ( cd dist && sha256sum --check SHA256SUMS )
+
+          # And it must still fail on tampering, or it is decoration.
+          printf 'tampered' >> dist/*.whl
+
+          if ( cd dist && sha256sum --check --status SHA256SUMS ); then
+            echo '::error::the checksum manifest did not detect a modified artefact'
+            exit 1
+          fi
+
+          echo 'Checksum manifest round-trips and detects tampering'
+
       - name: This repository satisfies its own strict preset
         run: ruff check --no-cache src/ && ruff format --no-cache --check src/
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8b87558..ca204d6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -249,7 +249,13 @@ jobs:
         run: |
           uv build --out-dir dist
           ls -l dist
-          sha256sum dist/* | tee dist/SHA256SUMS
+
+          # Generated from INSIDE dist/ so the manifest holds bare filenames. The publish job verifies
+          # it after `cd dist`, so a `dist/`-prefixed path there resolves to `dist/dist/...` and fails
+          # to open — which is exactly how the first 0.1.1 attempt broke. Patterns are explicit rather
+          # than `*` so SHA256SUMS can never checksum itself.
+          ( cd dist && sha256sum -- *.whl *.tar.gz > SHA256SUMS )
+          cat dist/SHA256SUMS
 
       # The wheel and the sdist must contain the same presets that ship in the other two packages.
       - name: The built wheel carries the presets
@@ -463,9 +469,16 @@ jobs:
         run: |
           npm config set '//npm.pkg.github.com/:_authToken' "${GH_PACKAGES_TOKEN}"
 
-          # --provenance is deliberately omitted. GitHub Packages neither displays nor verifies npm
-          # provenance statements, and the same bytes already carry one on npmjs plus a GitHub artefact
-          # attestation. Generating a second statement here would add a claim nobody can check.
+          # --provenance is deliberately omitted, and this job is granted no `id-token` permission.
+          # GitHub Packages neither displays nor verifies npm provenance statements, and the same bytes
+          # already carry one on npmjs plus a GitHub artefact attestation, so a second statement here
+          # would be a claim nobody can check.
+          #
+          # Note that omitting the flag is not sufficient on its own: `publishConfig.provenance: true`
+          # in package.json is baked into the tarball and makes npm attempt provenance on EVERY
+          # publish of it, which failed this job with "requires write access to the id-token
+          # permission". The declaration was removed from package.json; the npmjs job passes
+          # --provenance explicitly instead, so intent is per-registry rather than per-tarball.
           npm publish ./dist/*.tgz \
             --@matchory:registry=https://npm.pkg.github.com \
             --tag '${{ needs.verify.outputs.dist_tag }}'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d752524..a0601cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,9 +22,29 @@ even though nothing about the interface moved.
 
 Nothing yet.
 
-## [0.1.1] — 2026-07-30
+## [0.1.2] — 2026-07-30
 
-First published release.
+First release published to every registry.
+
+`0.1.1` reached npmjs, with provenance, but its PyPI and GitHub Packages jobs failed on two workflow
+bugs, so it exists on npmjs alone. Both are fixed here:
+
+- The checksum manifest was generated as `sha256sum dist/*`, which embeds the `dist/` prefix, while the
+  publish job verifies it after `cd dist` — so every path resolved to `dist/dist/...` and could not be
+  opened. It is now generated from inside `dist/` with bare filenames, and CI round-trips it the way the
+  release does, including asserting that it still detects a tampered artefact.
+- `publishConfig.provenance: true` is baked into the published tarball, so npm attempted provenance on
+  the GitHub Packages publish too and failed for want of an `id-token` permission that job is
+  deliberately not granted. The declaration is gone; the npmjs job passes `--provenance` explicitly, so
+  the intent is per-registry rather than per-tarball.
+
+Version tags cannot be moved or deleted in this repository, so `0.1.1` stays on npmjs as a superseded
+version rather than being retracted. PyPI has no `0.1.1`; the three ecosystems are aligned again from
+`0.1.2` onward.
+
+## [0.1.1] — 2026-07-30 [npmjs only]
+
+Published to npmjs only; see `0.1.2`.
 
 `v0.1.0` was tagged but never published. Its release run failed in the first job, because the workflow
 used `git cat-file` to check that the tag was annotated and `actions/checkout` materialises a tag ref as
@@ -102,5 +122,6 @@ ecosystems, so a malicious version would run in our CI and on developer machines
 Composer has no artefact provenance mechanism, so the PHP package's integrity rests on repository
 protection and signed tags instead.
 
-[Unreleased]: https://github.com/matchory/coding-style/compare/v0.1.1...HEAD
+[Unreleased]: https://github.com/matchory/coding-style/compare/v0.1.2...HEAD
+[0.1.2]: https://github.com/matchory/coding-style/compare/v0.1.1...v0.1.2
 [0.1.1]: https://github.com/matchory/coding-style/releases/tag/v0.1.1
diff --git a/js/package.json b/js/package.json
index 6a9a5c7..a9ca136 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@matchory/coding-style",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "Shared code style configuration for Matchory projects: oxlint, oxfmt, ESLint and TypeScript presets.",
   "license": "MIT",
   "private": false,
@@ -12,7 +12,6 @@
   },
   "publishConfig": {
     "access": "public",
-    "provenance": true,
     "registry": "https://registry.npmjs.org"
   },
   "exports": {
diff --git a/pyproject.toml b/pyproject.toml
index c64f33f..4139161 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@
 
 [project]
 name = "matchory-coding-style"
-version = "0.1.1"
+version = "0.1.2"
 description = "Shared code style configuration for Matchory projects: ruff presets and the canonical .editorconfig."
 readme = "README.md"
 requires-python = ">=3.11"
diff --git a/src/matchory_coding_style/__init__.py b/src/matchory_coding_style/__init__.py
index d9cd88b..6ba0c60 100644
--- a/src/matchory_coding_style/__init__.py
+++ b/src/matchory_coding_style/__init__.py
@@ -7,4 +7,4 @@
 
 __all__ = ["__version__"]
 
-__version__ = "0.1.1"
+__version__ = "0.1.2"